fix fa_cgi.py to be parseable with py2

so that nosetests doesn't die on us
we're not at 1.5.2 yet!
updated the much-neglected CHANGELOG.txt file
Create just one level of content directory

otherwise the changelog entries totally drown the text after it
Tag v1.5.2
Start 1.5.3 branch
missing imports
Allow overriding renderer_opts via an "attrs=…" column option
typo
document current release process
Prepare release
require 'six'
remove compiled .mop files from the archive
Merge 1.5 branch

and fix the damn version number